2,808
edits
Changes
→Silver–Molybdenum (SILMODUR) Materials
=== Silver–Molybdenum (SILMODUR) Materials===
Ag/Mo materials with typically 50-70 wt% molybdenum are usually produced bythe powder metallurgical infiltration process ''(Fig. 2.137) (Table 2.36)''. Theircontact properties are similar to those of Ag/W materials ''(Table 2.37)''. Since themolybdenum oxide is thermally less stable than tungsten oxide the self-cleaningeffect of Ag/Mo contact surface during arcing is more pronounced and thecontact resistance remains lower than that of Ag/W. The arc erosion resistanceof Ag/Mo however is lower than the one for Ag/W materials. The mainapplications for Ag/Mo contacts are in equipment protecting switching devices''(Table 2.38)''.
[[File:Micro structure of.jpg|right|thumb|Micro structure of Ag/W 25/75, Ag/WC 50/50, Ag/WC27/C3, Ag/Mo 35/65]]
'''Table 2.36: Physical Properties of Contact Materials Based on Silver–Tungsten (SIWODUR),Silver–Tungsten Carbide (SIWODUR C) and Silver Molybdenum (SILMODUR)'''
[[File:Physical Properties of-Contact Materials Based.jpg|right|thumb|Physical Properties of Contact Materials Based on Silver–Tungsten (SIWODUR), Silver–Tungsten Carbide (SIWODUR C) and Silver Molybdenum (SILMODUR)]]
'''Table 2.37: Contact and Switching Properties of Contact Materials Based on Silver – Tungsten(SIWODUR), Silver–Tungsten Carbide (SIWODUR C)and Silver Molybdenum (SILMODUR)'''
oben schon drin!
'''Table 2.38: Application Examples and Forms of Supply for Contact Materials Basedon Silver–Tungsten (SIWODUR), Silver–Tungsten Carbide (SIWODUR C)and Silver Molybdenum (SILMODUR)'''
[[File:Application Examples and Forms of Supply for Contact Materials Based.jpg|right|thumb|Application Examples and Forms of Supply for Contact Materials Based on Silver–Tungsten (SIWODUR), Silver–Tungsten Carbide (SIWODUR C) and Silver Molybdenum (SILMODUR)]]
